package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对前端传入的密码进行MD5加密处理
        password=DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 员工登录
     *
     * @param employeeDTO 注册前端传入数据
     * @return
     */
    @Override
    public void insert(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();

        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //状态设置为正常状态
        employee.setStatus(StatusConstant.ENABLE);

        //默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        employeeMapper.insert(employee);
    }

    /**
     * 员工登录
     *
     * @param employeePageQueryDTO 查询页数，每页数据数，查询人
     * @return
     */
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO){
        //使用pagehelper
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        //pageHelper.startPage ->在Threadlocal中创建page,创建拦截器 ->对于mybatis的查询结果进行拦截重写
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        PageResult pageResult=new PageResult(page.getTotal(),page.getResult());

        return pageResult;
    }

    /**
     * 员工权限关闭
     *
     * @param status 修改参数  id 用户参数
     * @return
     */
    public void startOrStop(Integer status, long id){

        Employee employee= Employee.builder()
                .id(id)
                .status(status).build();

        employeeMapper.update(employee);
    }

    /**
     * 根据Id查询员工
     *
     * @param   id 用户参数
     * @return
     */
    public Employee getById(long id){
        return employeeMapper.getById(id);
    }

    public void update(EmployeeDTO employeeDTO)
    {
        Employee employee= new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

        employeeMapper.update(employee);
    }
}
